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EDM Drilling

A reliable source for EDM information and leading EDM Companies

It is an alternative to conventional drilling methods when the material is too strong and resistant as it is an effective machining method for even hard materials such as polycrystalline diamond stock, magnet materials and carbide. Read More…

EDM Drilling EDM drilling is a specialized tooling process that creates holes in metal parts and products by using electrical energy in the form of sparks to erode the metal.
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Leading Manufacturers

Waukesha, WI  |  800-798-9228

XACT Wire EDM Corp. is one of the largest and most experienced Wire EDM Companies in the country. Our Wire EDM manufacturing capabilities include a large number of high-end machines with two locations offering advanced CMM and video inspection. We work with a wide variety of customers in the medical, defense, aerospace, automation, robotics industries as well as many companies in the metal machining, tooling & stamping industries. We are ISO 9001:2015 certified. Contact us today to learn more!

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Xact Wire EDM Corporation $$$

Benseville, IL  |  630-616-8700

When you need a precision machine shop capable of machining complex/precision components you can count on 3D Industries. Our manufacturing team has the experience, equipment, software, facility and skills required to produce components with 1 to 100-micron accuracy.

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3D Industries, Inc. $$$

Brea, CA  |  714-831-0176

Since our inception, Able Wire EDM Inc, an EDM manufacturer, has been specializing in aerospace, medical and automotive industries. As an industry leader, Able Wire EDM, Inc offers a number of varying services and produces parts economically and quickly with accuracy, exceeding its customers’ expectations with innovative manufacturing techniques, on-time deliveries and competitive pricing.

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Able Wire EDM, Inc. $$$

Houston, TX  |  800-947-3336

Reliable EDM began in 1986, and was built following the biblical principle of Golden Rule Thinking: do to others as you want them to do to you. By providing quality, service, and value to its customers, they have become the largest EDM job shop in North America with over 85 EDM machines. Our around the clock operations provide you with fast service.

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Reliable EDM, Inc. $$$

Buena Park, CA  |  800-494-7328

Founded in 1978, Wire Cut Company is an AS9100 ISO certified EDM manufacturer specializing in aerospace, medical and automotive industries. As an industry leader, Wire Cut offers a number of varying services and produces parts economically and quickly with accuracy, exceeding its customers’ expectations with innovative manufacturing techniques, on-time deliveries and competitive pricing.

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Wire Cut Company, Inc. $$$

Troy, MI  |  248-583-9166

Trutron Corporation was formed in 1967 as an Electrical Discharge Machining company. Continually working to better serve customers, our capacity has expanded to meet a broad spectrum of machining requirements. Today, Trutron is an innovator in full service precision manufacturing serving a variety of industries including Aerospace, Automotive, Defense, and Oil & Gas.

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Trutron Corporation $$$

Wellington, OH  |  440-647-0600

Since its founding in 1989, Star One has grown from a small machine shop with a single-wire EDM into a thriving full-service machining facility. With the recent addition of several state-of-the-art machines including the newest high-speed wire EDM, vertical machining center, straight-cut saw, and surface grinder available, Star One is fully equipped to complete your next project quickly and efficiently.

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Star-One EDM $$$
placeholder image Xact Wire EDM Corporation 3D Industries, Inc. Able Wire EDM, Inc. Reliable EDM, Inc. Wire Cut Company, Inc. Trutron Corporation Star-One EDM

Also known as electrical discharge machining drilling, EDM drilling is accomplished one of two ways - ram EDM and small hole EDM, both of which use an electrode that shoots out electrical charge or sparks which are hot enough to erode away any metal. Holes can be made on curved and angular surfaces, and they are drilled quickly, with accuracy and completely straight. Any electrically conductive material may be drilled by this method, including aluminum, copper, steel, stainless steel, zinc, tin, titanium, gold, lead, silver, iron and bronze.

Applications that make use of EDM drilling capabilities include for the creating of holes in turbine blades, fuel injectors, cutting tool coolant holes, hardened punch ejector holes, plastic mold vent holes and wire EDM starter holes which are necessary to start the process of wire cutting using electrical discharge machining. Precise and small holes are required in many different products and therefore EDM machining is used widely in the manufacturing, medical, automotive and aerospace industries.

The EDM drilling process begins with a round, hollow electrode made of brass or a similar metal, which then rotates around a spindle and shoots out electrical sparks that are extremely hot. The metal part or product is clamped down tight so it cannot move, and computer numeric controlled software determines the direction in which the electrode will point. A dielectric fluid bath, usually water based, is used to conduct the electrical current and to reduce the process temperature.

It also washes away the eroded material debris and prevents any premature sparking which would result in an imprecise finish. When the electrical sparks, created by a servo-controlled generator, shoot out of the tip, an electric field is created in the gap between the electrode and metal work piece. The surface is slowly eroded by this electrical energy, forming microscopic pockets that eventually form a perfect hole.

Hole diameters may be anywhere from 0.03 to 400 mm, and have the option to be extremely deep-up to 100 times the hole diameter. This is a key benefit in EDM drilling, as standard drilling is confined to depths 5 to 6 times the hole's diameter. Those that drill long or large holes through hard materials are often equipped with an automatic electrode changer because they tend to wear out quickly. Though it is costly to replace the electrodes used, this process of EDM drilling is still a cost effective solution to many drilling needs.